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const KeyringController = require('eth-keyring-controller')
const seedPhraseVerifier = {
// Verifies if the seed words can restore the accounts.
//
// The seed words can recreate the primary keyring and the accounts belonging to it.
// The created accounts in the primary keyring are always the same.
// The keyring always creates the accounts in the same sequence.
verifyAccounts (createdAccounts, seedWords) {
return new Promise((resolve, reject) => {
if (!createdAccounts || createdAccounts.length < 1) {
return reject(new Error('No created accounts defined.'))
}
const keyringController = new KeyringController({})
const Keyring = keyringController.getKeyringClassForType('HD Key Tree')
const opts = {
mnemonic: seedWords,
numberOfAccounts: createdAccounts.length,
}
const keyring = new Keyring(opts)
keyring.getAccounts()
.then((restoredAccounts) => {
log.debug('Created accounts: ' + JSON.stringify(createdAccounts))
log.debug('Restored accounts: ' + JSON.stringify(restoredAccounts))
if (restoredAccounts.length !== createdAccounts.length) {
// this should not happen...
return reject(new Error('Wrong number of accounts'))
}
for (let i = 0; i < restoredAccounts.length; i++) {
if (restoredAccounts[i].toLowerCase() !== createdAccounts[i].toLowerCase()) {
return reject(new Error('Not identical accounts! Original: ' + createdAccounts[i] + ', Restored: ' + restoredAccounts[i]))
}
}
return resolve()
})
})
},
}
module.exports = seedPhraseVerifier
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